Apparatus for separating rolled sheet-metal plates



J. A. HELLSTROM APPARATUS FOR SEPARATING ROLLED SHEET METAL PLATES Filed Jan. 28-. 1921 4 Sheets-Sheet l J. A. HELLSTROM APPARATUS FOR SEPARATING ROLLED SHEET METAL PLATES .Iufiy 110, 1923.

Filed Jan. 28 4 Sheets-Sheet 2 [Mm-wrap J. A. HELLSTROM APPARATUS FOR SEPARATING ROLLED SHEET METAL PLATES M m, was.

4 Sheets-Sheet 5 F11ed Jan 28 I 7 i S I y m, 1923 mam J. A. HELLSTROM APPARATUS FOR SEPARATING ROLLED SHEET METAL PLATES Filed Jan. 28 1921 4 Sheets-Sheet 4.

lfaterited July Ml, i923.

unite stares JOHN A. HELLSTR-OM, OF. WHEELING, -IKT ES'J. VIRGINIA.

AZPEARATUS FOR SEPARATING ROLLED SHEET-METAL PLATES.

Application filed January 28, 1921.

To all whomit may concern:

Be it known that I, JOHN A. HnLLstrnoM, a citizen of the Kingdomof Sweden, residing at Wheeling, in the county of Ohio, and State of West Virginia, have invented certain new and useful Improvements in an Apparatus for Separating Rolled Sheet- Metal Plates, of which the following 1s a specification, reference being had therein to the accompanying drawing.

This invention relates to an apparatus for separating rolled metal plates, and it embodies the corrugating of a pack of rolled sheet'metal plates and then hammering the corrugated portions flat for the purpose hereinafter described.

It is well known to thoseskilled in the art of manufacturing sheet metal plates that they are rolled from sheet bars, which are cut a length corresponding to the width of the finished rolled plates, and that during the rolling of the plates to the required thickness, the bar as it is being rolled is several times doubled upon itself, there be: ing a re-heating after each double, and a continuation of the rolling of the doubled bar, until the required thickness of the sheet is obtained, whereby the individual plates in the pack are rolled to uniform thickness.

It is also well-known to those skilled in the art of rolling the sheet metal plates, as above described, that as a result of the combined heat and pressure, the sheets become partly fastened together by what may be termed incipient welding between the plates or other portions of the contacting surfaces. By incipient welds I mean a sticking of the platestogether, and not an actual weld. Where a complete weld is made, it is impossible to separate the platesby the mechanism, and to separate them by hand, would be too expensive. Hence, the machine determines whether or not the plates can be separated.

Usually a good deal of labor is expended in finding out whether or not the plates are capable of mechanicalseparation. The machlne notonly determlnes whether they can be separated, but separates all those that are capable of separation. After the rolling of the plates is finished, the pack is sheared to sizes, thereby cutting the doubled edges and there remains a pack of sheet plates, which are connected together by the incipient welding above mentioned.

The primary object of my invention is to provide a new method of separating the Serial No. 440,676.

plates which consists in .corrugatin the plates, one corrugation at a time an: then hammer the corrugations flat which, practice, separates the incipientwelds of the plates and removes a large percentage of and removing a part of the scale therefrom by first corrugating'the plates, one corrugation at a time, and then flattening out the corrugated portions so that the plates pass from the apparatus in separated relation.

A further object of my invention is to separate the incipient welded plates. of the pack and removing a part of.the scale therefrom by subjecting the pack to a step by step corrugating action, one corrugation'at a time, and then hammering outthe corrugations step by step, whereby asimpl'e andinexpensive method as compared to the methods heretofore used is accomplished.

Further objects of my invention isto move the pack of platesstepby step and to corrugate the plates and hammer the corrugations while the plates are not in motion, whereby an effective method of separating the pack of plates and removing therefrom a'portion of the scale is accomplished.

A further object of my invention istoprovide the apparatus with -means for alternately setting the hammers and makingthe corrugation, whereby the compressingro f the springs'occurs when the bending die'is'idle, thus dividing the power between the bending of the plates and the setting ofthe hamme'rs, which requires less powe'r'f r pperation of the moving parts of theapparatus.

Further objects of the invention will appear from the following description.

In the accompanying drawings:

Figure 1. is a top plan view of my gimproved apparatus which is adaptedto }carry out my improved method.

Fig. 2 is a front elevation of FFig. 1.

Fig. 3 is an end elevation of Fig. 1 looking from the top of that figure.

Fig. 4 is a cross section takentthrough-the hammers of the apparatus.

Fig. 5 is a horizontalsection through the corrugating and hammer mechanism. of the apparatus. 4

fro

' which meshes with a gear 7 on the adjacent end ofa shaft 8,:which carries at its opposite end a pinion or gear 9. This pinion or gear 9 meshes with a gear 10, which is carried by a shaft 11. vided with an eccentric 12, adapted toset the hammers 13 in a manner which will be morefully described hereinafter.

"and socket joint 20.

Astationaryfemale die 14 and a movable male die 15, are provided for corrugating the pack of plates Aj The male die is suitably pivoted at 16, whereby it rocks or swings, as shown in Fig; 5. The male die is moved by means of an eccentric 17 which is carried by the shaft 11, and an eccentric strap 18 around the eccentric having an arm 19connected with the male die 15, by a ball A holding pin 21 serves, to hold the arm 19 and strap 18 in position and prevents it from turning on the eccentric 17 The male'and female dies 14 and 15 are arranged transverse the pack of plates A and are of a. length equal to the width of the plates whereby the plates are corrugated cross-wise, as clearly shown in Fig. 1. The male die 15 is provided with gauging prongs 22, whereby the plates are prevented from kficking'side-wise at either side of the dies when being bent, so that the plates will pass through the apparatus.

A horizontal roller 23 is placed at the inlet. end of the apparatus and the lower edges of the plates rest on this roller as they are being fed to the apparatus, and the plates are fed through the apparatus step by step a distance equal to the width "of the corrugation in eachof the step-byst-ep movements.

The means for feeding the plates intermittently, or step by step, consist of two vertical rollers 24 and 25. These rollers "are geared together at their upper ends as properv distance after a corrugation is made and, a' proper distance to receive the next corrugatlon.

This shaft 11 is pro- The roller 25 is supported in stationary bearings and the roller 24 is in slidable bearings-and held against the'pack of plates underspring tension by springs 27. The roller 25 is driven from a beveled gear 28 on its upper end, which meshes with a beveled gear 29 on a shaft-30', and the shaft 30 is provided with a beveled gear 31, driven by a beveled gear 32, on a shaft 33. The shaft 33 is provided at its opposite end with a gear 33 which meshes with a .gear' 11,

on the siaft 11, The rollers 24 and 25, I term as the feeding rollers. For the purpose of supporting, the plates between the corrugating dies and the'hammers, I provide a suitable supporting roller 34, and at the outlet or delivery .end of the apparatus is z supporting roll 23. 1

two vertical delivery rollers 35, which are provided with cam or eccentric portions similar to the rollers 24 and 25, sothat the sheets of the pack are delivered step by at the delivery side of the apparatus are.

step from the hammers 13, just as they are fed step'by step to the dies 14 and 15 to be bent or corrugated. w

The delveryrollers 35 are operated from the shaft by a pair of meshing beveled gears 36 and a pair of beveled gears 37 and one roller drives theother by meshing gearssimilar to the gears 26 in the upper ends of the rollers 24 and 25. The inner delivery roller 35 is in stationary bearings the same as the feed rollers, and the outer delivery roller is in movable bearings thesame as the outerroller of the feed rollers, and the sliding delivery roller is under spring tension bycsuitable upperand lower springs 38.

The hammers 13 are vertically arranged and of a, length equal to the width of a pack of-plates A. These'hammers cooperate with a stationary hammer block 39, for hammering out the bends or corrugations of the pack of plates. I

The hammers 13 may be actuated by any suitable power, such, as air, steam or springs and be within the scope of my present invention. As here shown, the hammers are operated by suitable coiled springs 40, and

these springs areset and released by ,a cam. 12 on the shaft 11. .In carrying out this part ofmy invention theupper ends 41 of the hammers 13 slide on rods 42, and their lower ends 43 slide on mediately pivoted rocking. levers 45 have their lower ends engaging the outer ends of hammer pulling rods 46, and their upper rods 44. i Interends 47 have rollers engaging the rollers 48 on the lower ends of the intermediately pivoted rock levers 49, which latter have their uppervends suitably connected with pulling rods 50, for the upper ends of the hammers 13. By reference to Fig. 4, it will be seen that the cam 12, pushes the inner ends of the levers 45 and 49 inward throwing their opposite ends outward thus drawing the hammers 13 against the tension of the springs 40, until the drop-off portion 12 of the cam is reached, which releases the levers and thereby the hammers, permitting them to hammer the bends or corrugations in the pack of plates against the stationary ham:

mer block 39. Located on the rods 42 and 44 and outside of the upper and lower sliding ends of the hammers 13, are hammer resting springs 51. v

The cam 12 and the eccentric 17 are so positioned on the shaft 11, that the springs 40 are compressed and the hammers 13 set when the male die 15 is being withdrawn and is, therefore, idle. By this arrangement the power required to accomplish the bending and hammering is not acting at the same time, but alternately, which, of course, requires less power than if the bending occurred simultaneously with the setting of the spring actuated hammers.

From this it follows that the hammers are released during the bending of the plates and are set when the die is withdrawn.

Attention is also called to the fact that the plates are fed through the machine step by step at a distance equal to the space occupied by one corrugation. Attention is also called to the fact that the bending or corrugations and hammering takes place while the plates are not moving. That is to say that they are stationary in the machine when the bending and hammering occur, and are moved after the hammers and die are withdrawn from the plate.

Attention is called to the fact that only one corrugation is made at one time. The corrugation breaks any incipient weld at that point, and so on through the plate step by step. By making one corrugation at a time the incipient welds are pulled or broken apart.

The number of hammers used, will depend upon the class of packs of sheets or tin plates that are being separated, and, therefore, the number of hammers may be varied to suit the character of the plates acted upon.

The individual hammers may be provided. with different pressures for acting on the plates, as they are fed step by step.

The base 1 of the apparatus will be provided with a suitable opening (not shown) through which the scale removed from the plates will pass into a suitable receving pit, not shown.

I desire it to be understood that the machine may be constructed to either operate upon the plates when they are in a horizontal or vertical position Without departing from my invention, and that there may be variations and changes in the apparatus also without departing from my invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1 1. An apparatus for separating a rolled pack of metal sheets, comprising means for feeding the pack step by step, and means for corrugating the plates and hammering the corrugations while the pack is not mov- 111g.

2. An apparatus for separating rolled packs of metal sheets, comprising a stationary and movable corrugating die, hammers for hammering the corrugations, and means for feeding and delivering the plates step by step. p

3. An apparatus for separating rolled packs of metal sheets, comprising a movable and stationary die, movable hammers and a stationary hammering block, and means for moving the plate step by step when the plate is not being corrugated or hammered.

4, An apparatus for separating rolled.

packs of metal sheets, comprising a corrugating means, means for hammering the corrugations, an operating mechanism for the corrugating means, and an operating mechanism for the hammering means, said operating mechanisms arranged to operate alternately whereby the corrugation is being made while the hammer means is being set, for the purpose described.

5. An apparatus for separating rolled packs of metal sheets, comprising corrugating means consisting of a stationary and a rocking die, means for feeding the pack between the dies when they are not acting on the pack, and hammering means for hammering the corrugations, for the purpose described.

6. An apparatus for separating rolled packs, of metal sheets, comprising means for feeding the sheets step by step, dies for forming one corrugation at a time in the plates to prevent slipping and doubling thereof, and means for hammering the corrugations, for the purpose described.

7. An apparatus for separating rolled packs of metal sheets, comprising means for feeding sheets step by step, dies for corrugating the sheets one corrugation at a time, means for hammering the corrugations, and die gauges for preventing sideways moving of the pack while being corrugated, whereby the pack is fed straight through the hammering mechanism.

In testimony whereof I hereunto aflix my signature.

JOHN A. HELLSTROM. 

